Speaks to a fundamental misunderstanding of the series a lot of people (esp younger ppl who approach this as a Fandom™️ first and a passion project of 1 man second) the engines are not People. They do not think or have the morals of People. If you write like they do, you failed.
Suffering as duty is probably the most intrinsic trope problem in TTTE since these trains are gonna be run if they can be no matter what, and it has created an island of workaholic martyrs ready to die for a cause they both gain their life force from yet never voluntarily joined